TYPES DS II AND DSL II METAL ENCLOSED LOW VOLTAGE POWER CIRCUIT BREAKERS

Transcription

1 om.c ww w.e lec tri ca lp ar tm an ua ls TYPES DS II AND DSL II METAL ENCLOSED LOW VOLTAGE POWER CIRCUIT BREAKERS

2 Proven Technology with the Enhancements and Additional Ratings Our Customers Asked For For over 25 years, Types DS and DSL Low Voltage AC Power Circuit Breakers have continually set industry standards for quality, reliability, and extended operating life resulting in the largest installed base of low voltage power circuit breakers. But electrical distribution system requirements are changing and our customers asked for enhancements that provide the capabilities of more accessories, more communications, easier wiring, and improved protection. And they emphasized that we add these enhancements without altering the breakers proven construction and performance characteristics. That s just what we did and the enhanced DSII and DSLII Breakers provide exactly what our customers require. We even added new ratings to help meet their expanding distribution system requirements. Where They re Used DSII and DSLII Breakers are designed specifically for use in metal-enclosed low voltage switchgear assemblies applied at nominal system voltages of , 80, or 600V AC. Six continuous current frame sizes, 800 through 5,000 amperes are covered by just three breaker frame sizes. Above 20V AC, DSII and DSLII Breakers have a short time rating that is equal to the instantaneous rating. This provides for better downstream coordination, allowing the breaker closest to the fault to trip. DSII and DSLII Breakers are also fully interchangeable, meaning they can be placed into compartments having the same dimensions and ratings. 100 Percent Rated DSII and DSLII Beakers are 100 percent rated, UL listed, and are built and tested to applicable NEMA, ANSI, IEEE, and UL standards in an ISO 9001 certified facility. Quality and Reliability Cutler-Hammer performs consistent endurance and reliability tests on DSII and DSLII Breakers. Mini-Life Tests. Daily, a breaker is randomly selected from the production line and tested for an average 150 mechanical operations to assure performance as required. Maxi-Life Tests. MTBF testing continuously tests DSII and DSLII Breakers until they fail. This identifies any weak links in the breaker mechanism and also demonstrates how design changes improve the performance and quality of the breakers. 2 Cutler-Hammer Products Low Voltage AC Power Circuit Breakers Types DSII and DSLII... The Best Has Become Better Ratings Type DSII-620 Low Voltage AC Power Circuit Breaker (left) and Type DSLII-308 (right) both shown with optional Digitrip RMS 910 Trip Units. Breaker Type Frame Interrupting Ratings, rms Symmetrical Amperes Size Amperes With Instantaneous Trip Without Instantaneous Trip➀➁ V 80V 600V 208V-20V 80V 600V Type DSII Circuit Breakers DSII ,000 30,000 30,000 30,000 30,000 30,000 DSII ,000 50,000 2,000 50,000 50,000 2,000 DSII ,000 65,000 50,000 65,000 65,000 50,000 DSII ,000 50,000 2,000 50,000 50,000 2,000 DSII ,000 65,000 50,000 65,000 65,000 50,000 DSII ,000 65,000 50,000 65,000 65,000 50,000 DSII ,000 65,000 65,000 65,000 65,000 65,000 DSII ,000 85,000 85,000 85,000 85,000 85,000 DSII ,000 85,000 85,000 85,000 85,000 85,000 Type DSLII Circuit Breakers DSLII DSLII DSLII All Types 200,000 on System Voltages 600 or Below DSLII DSLII ➀ Also short time ratings. ➁ Short circuit ratings of nonautomatic breakers except the DSII-80 and DSII-850 which are 65,000. Breaker Weights/Dimensions ➀ Breaker and drawout fuse truck in separate interlocked compartments. Note: DSLII-308, DSLII-516, and DSLII-620 include current limiters integral with drawout breaker elements. DSLII-632 includes DSII-632 Breaker and DSLII-80 includes DSII-80 Breaker and DSII-FT0 drawout fuse truck, in separate interlocked compartments. Breaker Type Frame Size Dimensions Inches Weight Pounds Amperes Height Width Depth Type DSII Circuit Breakers DSII DSII DSII DSII DSII DSII DSII DSII DSII Type DSLII Circuit Breakers DSLII DSLII DSLII DSLII-632➀ DSLII-80➀

3 Up to 60 Contact Points and Only One Standard Connection Drawing The one standard connection drawing feature provides significant time savings because a switchgear builder can prewire a harness prior to installation, making connections to the secondary and zone selective interlocking (ZSI) contacts when the breaker is being installed in the cell. Zone Selective Interlocking Low Voltage AC Power Circuit Breakers New Secondary Contacts Provide for More Accessories and Easier Wiring New Secondary Contacts DSII and DSLII Breakers are now available with up to 8 points of secondary contact in modules of 12 contacts each. More secondary contacts facilitate wiring while providing for nearly twice the number of breaker accessory connections. Standard Breaker Secondary Wiring Diagram Viewed from Front View of Switchgear Cell UV F1 UV LCS ATR ALARMS OTS 3 Auxiliary Switch 2 or OTS RESET NO NO NO NC NC NC F0 A6 SR COM ATR MOT G OTS 1 & 2 or MOT PWR F1 SR Zone Interlock/Communication 12 Point Plug Detail Zone 1 Zone 2 Zone 3 Fault 1 Zone Interlock 1 Z1 DG 2 Z2 SOUT 3 Z3 SIN Fault 2 Breaker Number 1 Fault 3 5 Breaker Number 2 LOAD Breaker Number 3 Z GOUT Z5 GIN Ground Fault Setting: 1200A Pickup 0.5 Seconds Time Delay Ground Fault Setting: 600A Pickup 0.3 Seconds Time Delay Zone Selective Interlock Wiring Ground Fault Setting: 300A Pickup No Time Delay Zone Interlock/Communication Plug NO NO ST GF NC NC Auxiliary Switch 1 Auxiliary Switch Communications 6 C6 COM1 9 C9 12 C12 COM CLOSE 7 8 C7 COM2 C8 10 C10 SHIELD 11 C11 NPOW Fault 1 There are no interlocking signals. The main breaker trip unit will initiate the trip instantaneously. Fault 2 The feeder breaker trip unit will initiate the trip instantaneously to clear the fault; and Zone 2 will send an interlocking signal to the Zone 1 trip unit. The Zone 1 trip unit will begin to time out, and in the event that the feeder breaker in Zone 2 would not clear the fault, the main breaker in Zone 1 will clear the fault in 0.5 seconds. Fault 3 The branch breaker trip unit will initiate the trip instantaneously to clear the fault; and Zone 3 will send an interlocking signal to the Zone 2 trip unit; and Zone 2 will send an interlocking signal to Zone 1. Zone 1 and Zone 2 trip units will begin to time out, and in the event that the branch breaker in Zone 3 would not clear the fault, the feeder breaker in Zone 2 will clear the fault in 0.3 seconds. Similarly, in the event that the feeder breaker in Zone 2 would not clear the fault, the main breaker in Zone 1 will clear the fault in 0.5 seconds. Typical Cell Can Be Prewired and Ready to Accept DSII Circuit Breaker A typical OEM cell shown prewired and ready to accept the breaker as delivered from the factory, assuring a positive connection of all contacts. Wiring for zone selective interlocking and/or IMPACC / PowerNet communications is connected in a pin which is easily inserted into the socket plug. This design also provides for ease of wiring when a customer s requirements increase, requiring the addition of accessories, zone selective interlocking, or IMPACC / PowerNet communications. New Internal Zone Selective Interlocking Contacts For customers whose distribution systems require the added protection of zone selective interlocking (ZSI), we placed the floating design socket plug with 12 points of contact internal to the breaker, next to the secondary disconnect contacts providing for ease of wiring. Zone Selective Interlocking Provides Positive System Coordination without Time Delays Cutler-Hammer pioneered ZSI, which allows the breaker closest to the fault to trip without any preset time delay. Through a hardwired connection between a downstream breaker s Digitrip Trip Unit and a DSII or DSLII main breaker s Digitrip Trip Unit, a restraining signal is sent upstream. This allows the breaker closest to the fault to trip instantaneously while the remainder of the distribution system remains on line, thus avoiding unnecessary and often costly downtime. IMPACC / PowerNet Communications The floating design socket plug is also used when customers require the highly reliable, comprehensive power monitoring capabilities provided by the IMPACC / PowerNet communications system. 3

4 Built-In Safety Features Provide Optimum Operator Safety and System Security Four position automatic mechanical interlocking system when the breaker is in a breaker compartment. 1. Remove. The breaker is nearest the front of the compartment and open with the closing springs discharged. It cannot be closed electrically or manually. It is padlockable in this position. 2. Disconnect. A storage position with the breaker in the compartment but open and disconnected. It can be padlocked in place. 3. Test. Main disconnects are disengaged, secondary contacts are engaged. All functions of the breaker and trip unit can be tested in this position.. Connected. Both main and secondary contacts are connected and the breaker is ready for normal operation. Deadfront faceplate shield isolates the operator from high voltage when the breaker is energized. When the breaker is in a compartment, the compartment door acts as a double deadfront shield. Padlocking provision enables the breaker to be padlocked in a trip-free condition. The breaker cannot be closed or moved with the levering device. The padlock itself is placed in the padlock plate that extends through the front of the breaker faceplate. This helps prevent unauthorized racking and operation of the breaker. Glass polyester insulation provides sufficient mechanical strength to resist short circuit forces and is highly resistant to heat and arcing. Interference interlocks are provided to prevent insertion of breakers with mismatched disconnects or insufficient interrupting ratings into compartments carrying a higher current. Electrical lockout for manually operated breakers prevents closing of an unenergized circuit. When the circuit is energized, the breaker can be closed by pushing the push-to-close mechanism release button. Closed breaker interlock prevents operation of the spring release when the breaker is already closed. DE-ION Arc Extinguishers Provide Superior Arc Quenching Cutler-Hammer developed the DE-ION arc extinguisher that assists in the interruption of high energy faults by dissipating the large amounts of arc energy. Each arc extinguisher includes a series of steel plates that attract the arc and interrupt it by cooling and stretching the arc. Cutler-Hammer Products Types DSII and DSLII Breakers Provide Safety, Security, and Easier Operation User Friendly Operation Types DSII and DSLII Breakers Controls and indicators are functionally grouped on the front of the breakers Rear and front views of Type DSII-620 Low Voltage AC Power Circuit Breaker. 15 Standard Digitrip RMS Trip Unit Drawout Position Indicator Shutter Covering Access to Levering Shaft (Shown in Closed Position) Open-Close Indicator Metal Faceplate Shield Manual Charge Handle Padlock Plate Push-to-Trip Button Push-to-Close Mechanism Release Button 10 Spring Charge Indicator 11 Interphase Barriers 12 Secondary Disconnects 13 Zone Selective Interlock/ IMPACC / PowerNet Communications Plug 1 Main Disconnects 15 Levering Device Arm 16 DE-ION Arc Chute

5 Type DSLII Circuit Breakers Extend Interrupting Ratings up to 200 ka rms Symmetrical DSLII Breakers are a combination of series connected current limiters and standard DSII Breakers extending the interrupting rating of DSII Breakers up to 200 ka. Consequently, they re used on systems where the overload protection and switching functions of air power breakers are required and available fault currents exceed the interrupting ratings of the circuit breakers alone and/or exceed the withstand and interrupting ratings of downstream circuit components. Current Limiters Mounting 800, 1600, and 2000 Ampere Breakers: Integrally mounted in the drawout breaker and 000 Ampere Breakers: Mounted on separate drawout trucks that fit into compartments of equal size to their compatible breakers and are positioned adjacent to one another. Exclusive Features 1 Fault Interruption. On overloads and faults within the breaker interrupting rating, the breaker protects the limiters. On higher fault currents exceeding the breaker rating, the limiters protect the breaker. 3 Low Voltage AC Power Circuit Breakers Types DSII and DSLII Breakers Are Simple to Inspect and Easy to Maintain Blown Limiter Indicators Isolating Transformers for Blown Fuse Indicators Zone Selective Interlock/IMPACC/PowerNet Communications Plug Current Limiters Secondary Disconnects Main Disconnects With properly selected and coordinated limiters, the breaker itself will clear overloads and faults within its interrupting rating, leaving the limiters intact and undamaged. The limiters will provide fast interruption of fault currents beyond the breaker rating up to a maximum 200 ka rms symmetrical. Single-Phasing Protection. Interlock arrangements trip the breaker whenever any limiter blows, preventing singlephasing. The breaker cannot be reclosed on a live source unless there are three unblown limiters on the breaker. There are three blown limiter indicators on the breaker faceplate, providing a visual indication when a limiter in any phase has interrupted a fault. Safety Features. Current limiters on Types DSLII-308, DSLII-516, and DSLII-620 Breakers are accessible only when a breaker has been completely withdrawn from its compartment. For Types DSLII-632 and DSLII-80 Breakers, current limiters are mounted on a separate fuse truck. It is key interlocked with the breaker to prevent withdrawal or insertion unless the breaker is disconnected. Designed for Easy Access, Inspection, and Minimal Maintenance The stored energy mechanism and control devices are easily accessible (in the remove and disconnect positions) and can be inspected by removing the front panel. Inspection, minor maintenance when required (such as lubricating the mechanism), and accessing the control components is simplified. Additionally, many minor replacement functions involving the mechanism, control, and/or accessory devices can be easily accomplished. True Two-Step Stored Energy Mechanism for Manually and Electrically Operated Breakers Stored energy is energy held in waiting, ready to open or close the breaker within five cycles or less. The unique cam and spring design provides necessary energy for a single close-open sequence as well as the energy for multiple charge-close operations such as this possible sequence: charge-close-recharge-open-close-open. This means the energy required to open the breaker is always prestored following a closing operation. On manually operated breakers, closing springs are charged by hand. For electrically operated breakers, springs are normally charged by an electric motor but can be manually charged in the absence of control power. More Information Further information and pricing can be found in PL.22B.01.P.E. 5

6 Cutler-Hammer introduced the first microprocessor-based trip unit and has advanced this technology into a new family of Digitrip RMS Electronic and Digitrip OPTIM Programmable Trip Units. Digitrip RMS 510 is the standard trip unit of DSII and DSLII Breakers. It enables the user to select as many as nine phase and Digitrip RMS Electronic and OPTIM Programmable Trip Units Selection Guide Digitrip RMS 510 is standard. For Voltage/Rating information, refer to Page 2. TRIP UNIT SENSING Cutler-Hammer Products RMS 510 RMS 610 OPTIM 750 RMS 810 RMS 910 OPTIM 1050 rms Sensing Yes Yes Yes Yes Yes Yes PROTECTION AND COORDINATION Protection Ordering Options LI, LS, LSI, LIG LI, LSI, LIG LSI(A), LSIG LI, LS, LSI, LIG LI, LS, LSI, LIG LSI(A), LISG LSG, LSIG LSG, LSIG LSG, LSIG LSG, LSIG Fixed Rating Plug (I n) Yes Yes Yes Yes Yes Yes Overtemperature Trip Yes Yes Yes Yes Yes Yes Long Adjustable Rating Plug (I n) No No No No No No Delay Long Delay Setting (l n) x (I n) x (I n) x (I n) x (I n) x (I n) Protection Long Delay Time I 2 t 2-2 Seconds 2-2 Seconds 2-2 Seconds 2-2 Seconds 2-2 Seconds 2-2 Seconds Long Delay Thermal Memory Yes Yes Yes Yes Yes Yes High Load Alarm No 0.85 x I r x I r 0.85 x I r 0.85 x I r x I r Short Short Delay Setting % S1 & S2 x (I r) % S1 & S2 x (I r) % x (I r) % S1 & S2 x (I r) % S1 & S2 x (I r) % x (I r) Delay Short Delay Time I 2 t ms ms ms ms ms ms Protection Short Delay Time Flat ms ms ms ms ms ms Short Delay Time ZSI Yes Yes Yes Yes Yes Yes Instantaneous Instantaneous Setting % M1 & M2 x (l n) % M1 & M2 x (l n) % x (l n) % M1 & M2 x (l n) % M1 & M2 x (l n) % x (l n) Discriminator 0Yes➀ 0Yes➀ Yes 0Yes➀ 0Yes➀ Yes Protection Instantaneous Override Yes Yes Yes Yes Yes Yes Ground Ground Fault Setting % x (I n)➁ % x (I n)➁ 20/25-100%➁ % x (I n)➁ % x (I n)➁ 20/25-100%➁ Fault Ground Fault Delay I 2 t ms ms ms ms ms ms Protection Ground Fault Delay Flat ms ms ms ms ms ms Ground Fault ZSI Yes Yes Yes Yes Yes Yes Ground Fault Thermal Memory Yes Yes Yes Yes Yes Yes SYSTEM DIAGNOSTICS Cause of Trip LEDs Yes Yes Yes Yes Yes Yes Magnitude of Trip Information No Yes Yes Yes Yes Yes Remote Signal Contacts No Yes Yes Yes Yes Yes SYSTEM MONITORING Digital Display No Yes 0Yes➂ Yes Yes 0Yes➂ Current No Yes Yes Yes Yes Yes Voltage No No No No Yes Yes Power and Energy No No No Yes Yes Yes Power Quality Harmonics No No No No Yes Yes Power Factor No No No 0Yes Yes Yes SYSTEM COMMUNICATIONS IMPACC / PowerNet No No Yes Yes Yes Yes FIELD TESTING Testing Method➄ Integral Integral OPTIMizer, BIM, Integral Integral OPTIMizer, BIM, IMPACC / PowerNet IMPACC / PowerNet ➀ LS, LSG only. ➁ Not to exceed 1200A. 6 ➂ By OPTIMizer/BIM. Over IMPACC / PowerNet only. A Wider Selection of Trip Units Provide Expanded Protection Capabilities ground current protection settings for maximum flexibility in trip-curve shaping and multi-unit coordination. For more sophisticated distribution systems, other Digitrip Electronic or Programmable Trip Units may be specified to provide IMPACC / PowerNet communications, systems diagnostics information, and systems ➄ Set by adjustable rating plug. monitoring information including power factor, voltage values, harmonic distortion values, and waveform capture. For additional Digitrip information, contact your Cutler-Hammer distributor or sales engineer. I n = Rating plug rating. I r = LDPU setting. I s = Sensor rating. BIM = Breaker Interface Module.

7 IMPACC / PowerNet Communications: A Highly Reliable System that Will Improve the Operating Efficiency of Your Plant or Building As a high frequency-based system, IMPACC / PowerNet is unaffected by the electromagnetic fields that result when current flows through conductors. This helps provide for increased reliability while significantly reducing equipment and installation costs. A master control unit (connected to the DSII or DSLII Breaker with a shielded twisted pair communications wire) is used to monitor, control, and communicate with the breaker s Digitrip RMS Trip Unit. The master control unit may be a personal A Full Range of Factory Installed Breaker Accessories Electrical Operator. A universal type electric motor, internal to the breaker, that charges the springs automatically. Shunt Trip for Manually Operated Breakers. Provides remote controlled tripping. Undervoltage Release Instantaneous. Trips the breaker instantaneously when voltage on its coil falls between 30 to 60 percent of normal. Low Voltage Switchgear Structural Components DSII Power Modules Complete structures including fully equipped breaker compartments. The switchgear manufacturer provides value-added items such as doors, bus, cable area compartment, instruments, relays, and associated wiring. Low Voltage AC Power Circuit Breakers IMPACC / Power Net Communications, Breaker Accessories, and Structural Components On-Site Location Off-Site Location Undervoltage Release Time Delay. Provided with a nonadjustable time delay that prevents the breaker from tripping during momentary fluctuations of system voltage. Auxiliary Switches. Provide the capability to remotely indicate if the breaker is open or closed and may be used on breakers with either manually or electrically operated stored energy mechanisms. Two types of auxiliary switches are available: 2A/2B switches have two The Cutler-Hammer value-added modular approach for assembling low voltage switchgear featuring DSII Breakers and structures provides switchgear manufacturers DSII Substructure The basic assembled breaker supporting structure including breaker mounting pan, contact mounting plate, stationary main contacts, drawout extension rails, and side and back sheets. The switchgear manufacturer provides value-added items such as doors, bus, cable area compartment, instruments, relays, and associated wiring. computer, an existing building management system, a programmable logic controller, or a distributed control system. Through IMPACC / PowerNet, information communicated from a DSII or DSLII Breaker includes breaker status (open/close/trip), cause and magnitude of trip, metering values, trip rating, and time stamping of events. The breaker itself can be remotely opened or closed. For additional IMPACC / PowerNet information, contact your Cutler-Hammer distributor or sales engineer. normally open and two normally closed contacts. 5A/5B switches have five normally open and five normally closed contacts. Operation Counter. A mechanical counter that provides a record of the number of breaker operations. Contact your Cutler-Hammer distributor or sales engineer for a complete list of accessories. with opportunities to add the most value to their low voltage switchgear. For more information refer to PL.B.0.P.E. DSII Breaker Cell Parts Breaker mounting pan, contact mounting plate, and stationary main contacts. In addition to assembling these parts, the switchgear manufacturer provides value-added items such as doors, bus, cable area compartment, side sheets, instruments, relays, and associated wiring. Breaker cell parts are available individually or as an entire kit. 7

8 Cutler-Hammer, a part of Eaton Corporation, is a worldwide leader providing customer-driven solutions. From power distribution and electrical control products to industrial automation, Cutler-Hammer utilizes advanced product development, world-class manufacturing, and offers global engineering services and support. For more information on Cutler-Hammer products, call or , for engineering services call , or visit our website at Pittsburgh, Pennsylvania U.S.A. Publication No. B.22B.01.S.E February 2001 Printed in U.S.A. / CMS 2159 B22B01SE